Window or ring ventilator



April 19, 1960 w. H. BRASKAMP 2,933,241

wmnow OR RING VENTILATOR Filed Nov. 4, 1957 2 Sheets-Sheet l April 9, 1960 w. H. BRASKAMP 2,933,241

WINDOW OR RING VENTILATOR Filed Nov. 4, 1957 2 Sheets-Sheet 2 United States Patent WINDOW R RING VENTHLATOR Willem Hendrik Braskamp, Voorburg, Netherlands, assignor to N.V. Industriele Onderneming W. H. Braskamp, Handelskade, South-Holland, Netherlands, a Dutch limited-liability company Application November 4, 1957, Serial No. 694,365

Claims priority, application Netherlands September 28, 1957 3 Claims. (Cl. 230-259) and serve to remove used air, vapours or smoke from rooms, such as e.g. a kitchen. Such ventilators have been secured in the glass pane or the like by fitting two sections of the cylindrical casing on either side of the glass pane and joining them together. This is a cumbersome method, for when the window ventilator is to be fitted, two men are always required to hold the two sections till they have been joined together. In such ventilators the casing of the motor is firmly fixed in the cylindrical casing, while further a cover or other shutter is present by means of which the passage can be opened or shut. Several constructions are known for opening and shutting this shutter simultaneously with the starting of the motor, all of which constructions are rather complicated and expensive.

Now the invention has for its object to furnish a window or ring ventilator that is cheaper than the known ventilators, admits of a greater variety of uses, and is easier to fit.

According to the invention this object is primarily attained by the fact that the motor in conjunction with the fan is adjustable about a horizontal transverse axis.

This adjustability-of the motor in conjunction with the fan has the result that the ventilator can be used not only for exhausting but also for other purposes, e.g. for introducing fresh air or as a direct propelling ventilator. The introduction of fresh air may be effected, for example, by placing the ventilator, with the shutter opened, in such a way that the fan is approximately in a horizontal plane. When the fan is swung upwards beyond this horizontal position, a direct flow, directed obliquely inwards and downwards, is produced, to which fresh air may be added, if desired, by opening the shutter completely or partially.

Although the construction might be such that the horizontal transverse axis intersects the shaft of rotation of the ventilator and the adjustment thus takes place inside the cylindrical casing, yet the simpler construction, in which according to the invention the horizontal transverse axis is near the upper edge of the cylindrical casing, is preferred. This construction is superior not only because the difficulties as to the shape and the location of the horizontal transverse axis are thus avoided, but also because it is now possible according to the invention to secure the motor to a brace, the lower part of which has been designed as a grip, the upper part forming the axis of rotation or being attached to a transverse shaft. The upper ends of the brace are preferably arrested by a springactuated snapping or clamping mechanism; This snapping mechanism might be formed by assembly plates for the shaft, provided with indentations or the like, in such a way that the upper ends of the brace are kept 2,933,241 Patented Apr. 19, 1960 between the said indentations by the shaft.

From the foregoing it is seen that it is desirable in connection with the adjustability of the ventilator for the shutter for the cylindrical casing to be operated and adjusted independently of the ventilator, and according to the invention this shutter is formed by a cover adapted to pivot about a spindle attached to the circumference of the casing, which cover is forced into the opened position by a spring and can be brought into the shut position by a pulling member. Such a shutter can be manufactured very cheaply. Such a pivoting cover can easily be adjusted to the fully opened position, the shut position or an intermediate position in combination with a given adjustment of the ventilator. The pulling member preferably passes through a pipe that has been fitted to the circumference of the casing and is adapted to rotate about its longitudinal axis, said pipe being bent downwards on the inside of the window and being provided in its central section with a transverse groove, which is engaged by a leaf spring fixed to the casing, while the section of the pulling member passing through the pipe consists of a chain of spherical or similar elements. The leaf spring, which engages the spherical elements, serves to arrest the pulling member, owing to which the cover can be fixed in the shut position or in a partially opened position, while opening can be very easily effected by pulling the pulling member somewhat obliquely, as a result of which the pipe is rotated and the edges of the groove therein lift the leaf spring, so that the latter gets out of engagement with the chain.

In some known ventilators the casing is supported in a spring fitted about the glass pane with the interposition of a ring of rubber diameter and is provided on the inside with a flange that is directed radially outwards, which flange is enclosed in a radial circumferential groove of the rubber ring. The ventilator can now be fitted by one man because no section to be fixed has to be held on the outside, the fitting being performed by first placing the rubber ring in the opening in the glass and then inserting the ventilator with its casing into the rubber ring until the flange that is directed radially outwards rests against it, upon which the rubber ring is pulled over the flange and the casing is thus fitted in the glass pane.

The invention thus furnishes a cheaply manufactured ventilator, which can be fitted much more easily and which also has the advantage that it can be placed in various positions, an advantage by which its elficiency is appreciably increased.

The invention will now be elucidated more in detail with reference to the drawings.

Fig. 1 is a cross-section.

Fig. 2 is a rear elevation of a part of the ventilator.

The ventilator shown in the drawing consists of the motor casing 1 and the fan 2. The motor casing is secured to a brace 3 by means of the screws 4, which at the same time keep together the sections of the casing of the motor, the lower part of said brace being designed as a grip 5, while the upper ends are rotatably and movably supported in bearings about a shaft 7, which is fixed in a fitting brace 8 secured on the inside of the cylindrical casing 9 of the ventilator. The fitting brace 8 has been extended towards the front, where it carries the shaft 10 for the shutter 11 in the form of a cover. This cover 11 is continually forced into the opened position by a spring-not shownabout the shaft 10. The sides of the fitting brace 8 are provided with indentations 12 and about the shaft 7 has been fitted a. helical spring 13, which keeps' the ends of'the brace legs? 6 pressed between the indentations 12; When tlie'grip Sismoved outwards and" upwards, thelegs 6 bound inwards and then spring between at subsequent set of indentations, as a result of. which the ventilator is lb'ck'ediha'diiferenfposition; In?

this way the ventilator can be adjusted in amapproxi matelyj horizontal position or in a position in which it is directed obliquely upwards" and inwards, as indicatedbyJ the lines 14 and 15 respectively,v

The ventilator hasibe'en' fittedin anopening'of a glass pane 1'6, with the interposition of'a' rubber ring 17 engaging inthe form ofa U about theedge of the opening in the glass. The casingfhas been" so constructed that it has its maximum external diameter near the internal" diameter of this rubber ring,.exc'ept"for' a radially directed ber 20 consisting of" spherical elements; Attached to the. casing 9'is further a; leaf' spring 21", which engages a.

groove in the pipe 19and in this Way arrests the chain of spherical elements. When the-pipe isrota'tedjas indicated by 'thearrowsin Fig. 2 by: obliquely pulling the pulling member, the leaf spring 21 is" lifted and brought out ofenga'gement with the spherical elements, as 'a' resultof which the chain can slidethrough thep ipeandthecover II is enabled toop'en under the influence'o'fth'e springat' theshaft 1o: I V

In the positionishown'in'; the" drawing the ventilator-is notoperating. When now the cover 11 is'opened"and-tinev motor started; the ventilator will; serve as an exhausting- When the ventilator. is given" a horizontal' ventilator; position by-operating the brace 5, ,an air-current is,di:. rected ,downwards, which, when vthescovert 111s eg. shut, propelsv downwards warm air risingwfi'om a. heating radiw at'01',.thus distributing it more effectively, whilst, when the. cover 11', is. opened, ,the' air currentflowing along the.

passage and producedzby the ventilator causes; freshain from outside to be sucked intotheiroome- 'When the.

ventilator. is raised furtherstill andthecover: 11 is opened;

fresh-air. canalso bersuc'k'ed.into;the.;room in: this. way,

tasaaat 4.. a felt directly. When in this position the cover 11 is shut,

only tfiedbwnwardly directed'cooling air current produced by the ventilator is used, which moreover results in a more effective distribution of the heat in a heated room.

It is further stated that the features described above can also be applied when the ventilator has not been fitted in ajglas's' pane; buteg; in a. plate of. a different material or evenin a wall or a tube passing through a wall.

What I claim is:

1i Aventilat'or adapted forbeingmounted in an ope ing'in walls andpanes oi glass and-the like comprisinga a cylindrical housing, means for fixing said housing in position in -said opening, a brace on the housing, brace legs depending. from said brace, and. pivotally connected to the latter for rotation about a substantially horizontal axis, said legs traversing said housing and including portions constitutingxa grip, a motor supported on and between the 1egs, and a fan on the motor and normally acwhile; in,v addition the cooling: effect off the ventilator is I commodated insaid housing, said gripprovidingfortad- 'justing' the position of said fan,- said brace comprising; spacedplates including corresponding alignments of "spaced" ernbossme'nts; the=legs being positioned between the: plates; the"'ve ntilator'fii'rther comprisinga spring urgingthe-le'gs between adjacent embossments on the respective plates whereby the legs'ma y'be fixed in position.

2-; A ventilator asclaimed inclaim" 1; wherein said brace includes a horizontal bearing, said legs including:

uppermost portions pivotal in saidbearing. I

3'. A ventilator asclaimed in claim 1, comprising a? shutter" for'closing the housing and'pivotal'on said bra'ce' andmeans extending through the housing forcontrollingj the shutter.

' Referencesg Cited:inthefile of this-patent 

